include/linux/jump_label_ratelimit.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_JUMP_LABEL_RATELIMIT_H
   3 #define _LINUX_JUMP_LABEL_RATELIMIT_H
   4
   5 #include <linux/jump_label.h>
   6 #include <linux/workqueue.h>
   7
   8 #if defined(CONFIG_JUMP_LABEL)
   9 struct static_key_deferred {
  10         struct static_key key;
  11         unsigned long timeout;
  12         struct delayed_work work;
  13 };
  14
  15 extern void static_key_slow_dec_deferred(struct static_key_deferred *key);
  16 extern void static_key_deferred_flush(struct static_key_deferred *key);
  17 extern void
  18 jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
  19
  20 #else   /* !CONFIG_JUMP_LABEL */
  21 struct static_key_deferred {
  22         struct static_key  key;
  23 };
  24 static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
  25 {
  26         STATIC_KEY_CHECK_USE(key);
  27         static_key_slow_dec(&key->key);
  28 }
  29 static inline void static_key_deferred_flush(struct static_key_deferred *key)
  30 {
  31         STATIC_KEY_CHECK_USE(key);
  32 }
  33 static inline void
  34 jump_label_rate_limit(struct static_key_deferred *key,
  35                 unsigned long rl)
  36 {
  37         STATIC_KEY_CHECK_USE(key);
  38 }
  39 #endif  /* CONFIG_JUMP_LABEL */
  40 #endif  /* _LINUX_JUMP_LABEL_RATELIMIT_H */